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path: root/drivers/mmc/core
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Diffstat (limited to 'drivers/mmc/core')
-rw-r--r--drivers/mmc/core/bus.c6
-rw-r--r--drivers/mmc/core/core.c426
-rw-r--r--drivers/mmc/core/core.h1
-rw-r--r--drivers/mmc/core/debugfs.c28
-rw-r--r--drivers/mmc/core/host.c11
-rw-r--r--drivers/mmc/core/mmc.c287
-rw-r--r--drivers/mmc/core/mmc_ops.c39
-rw-r--r--drivers/mmc/core/mmc_ops.h1
-rw-r--r--drivers/mmc/core/quirks.c11
-rw-r--r--drivers/mmc/core/sd.c49
-rw-r--r--drivers/mmc/core/sd_ops.c8
-rw-r--r--drivers/mmc/core/sdio.c11
-rw-r--r--drivers/mmc/core/sdio_bus.c2
-rw-r--r--drivers/mmc/core/sdio_cis.c4
-rw-r--r--drivers/mmc/core/sdio_irq.c6
-rw-r--r--drivers/mmc/core/sdio_ops.c9
16 files changed, 786 insertions, 113 deletions
diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c
index 393d817ed040..46b6e84d953e 100644
--- a/drivers/mmc/core/bus.c
+++ b/drivers/mmc/core/bus.c
@@ -295,7 +295,7 @@ int mmc_add_card(struct mmc_card *card)
}
if (mmc_host_is_spi(card->host)) {
- printk(KERN_INFO "%s: new %s%s%s card on SPI\n",
+ pr_info("%s: new %s%s%s card on SPI\n",
mmc_hostname(card->host),
mmc_card_highspeed(card) ? "high speed " : "",
mmc_card_ddr_mode(card) ? "DDR " : "",
@@ -334,10 +334,10 @@ void mmc_remove_card(struct mmc_card *card)
if (mmc_card_present(card)) {
if (mmc_host_is_spi(card->host)) {
- printk(KERN_INFO "%s: SPI card removed\n",
+ pr_info("%s: SPI card removed\n",
mmc_hostname(card->host));
} else {
- printk(KERN_INFO "%s: card %04x removed\n",
+ pr_info("%s: card %04x removed\n",
mmc_hostname(card->host), card->rca);
}
device_del(&card->dev);
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index b27b94078c21..5278ffb20e74 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -24,6 +24,8 @@
#include <linux/regulator/consumer.h>
#include <linux/pm_runtime.h>
#include <linux/suspend.h>
+#include <linux/fault-inject.h>
+#include <linux/random.h>
#include <linux/mmc/card.h>
#include <linux/mmc/host.h>
@@ -83,6 +85,43 @@ static void mmc_flush_scheduled_work(void)
flush_workqueue(workqueue);
}
+#ifdef CONFIG_FAIL_MMC_REQUEST
+
+/*
+ * Internal function. Inject random data errors.
+ * If mmc_data is NULL no errors are injected.
+ */
+static void mmc_should_fail_request(struct mmc_host *host,
+ struct mmc_request *mrq)
+{
+ struct mmc_command *cmd = mrq->cmd;
+ struct mmc_data *data = mrq->data;
+ static const int data_errors[] = {
+ -ETIMEDOUT,
+ -EILSEQ,
+ -EIO,
+ };
+
+ if (!data)
+ return;
+
+ if (cmd->error || data->error ||
+ !should_fail(&host->fail_mmc_request, data->blksz * data->blocks))
+ return;
+
+ data->error = data_errors[random32() % ARRAY_SIZE(data_errors)];
+ data->bytes_xfered = (random32() % (data->bytes_xfered >> 9)) << 9;
+}
+
+#else /* CONFIG_FAIL_MMC_REQUEST */
+
+static inline void mmc_should_fail_request(struct mmc_host *host,
+ struct mmc_request *mrq)
+{
+}
+
+#endif /* CONFIG_FAIL_MMC_REQUEST */
+
/**
* mmc_request_done - finish processing an MMC request
* @host: MMC host which completed request
@@ -102,13 +141,15 @@ void mmc_request_done(struct mmc_host *host, struct mmc_request *mrq)
}
if (err && cmd->retries) {
- pr_debug("%s: req failed (CMD%u): %d, retrying...\n",
- mmc_hostname(host), cmd->opcode, err);
-
- cmd->retries--;
- cmd->error = 0;
- host->ops->request(host, mrq);
+ /*
+ * Request starter must handle retries - see
+ * mmc_wait_for_req_done().
+ */
+ if (mrq->done)
+ mrq->done(mrq);
} else {
+ mmc_should_fail_request(host, mrq);
+
led_trigger_event(host->led, LED_OFF);
pr_debug("%s: req done (CMD%u): %d: %08x %08x %08x %08x\n",
@@ -212,7 +253,21 @@ static void __mmc_start_req(struct mmc_host *host, struct mmc_request *mrq)
static void mmc_wait_for_req_done(struct mmc_host *host,
struct mmc_request *mrq)
{
- wait_for_completion(&mrq->completion);
+ struct mmc_command *cmd;
+
+ while (1) {
+ wait_for_completion(&mrq->completion);
+
+ cmd = mrq->cmd;
+ if (!cmd->error || !cmd->retries)
+ break;
+
+ pr_debug("%s: req failed (CMD%u): %d, retrying...\n",
+ mmc_hostname(host), cmd->opcode, cmd->error);
+ cmd->retries--;
+ cmd->error = 0;
+ host->ops->request(host, mrq);
+ }
}
/**
@@ -279,8 +334,14 @@ struct mmc_async_req *mmc_start_req(struct mmc_host *host,
mmc_wait_for_req_done(host, host->areq->mrq);
err = host->areq->err_check(host->card, host->areq);
if (err) {
+ /* post process the completed failed request */
mmc_post_req(host, host->areq->mrq, 0);
if (areq)
+ /*
+ * Cancel the new prepared request, because
+ * it can't run until the failed
+ * request has been properly handled.
+ */
mmc_post_req(host, areq->mrq, -EINVAL);
host->areq = NULL;
@@ -319,6 +380,63 @@ void mmc_wait_for_req(struct mmc_host *host, struct mmc_request *mrq)
EXPORT_SYMBOL(mmc_wait_for_req);
/**
+ * mmc_interrupt_hpi - Issue for High priority Interrupt
+ * @card: the MMC card associated with the HPI transfer
+ *
+ * Issued High Priority Interrupt, and check for card status
+ * util out-of prg-state.
+ */
+int mmc_interrupt_hpi(struct mmc_card *card)
+{
+ int err;
+ u32 status;
+
+ BUG_ON(!card);
+
+ if (!card->ext_csd.hpi_en) {
+ pr_info("%s: HPI enable bit unset\n", mmc_hostname(card->host));
+ return 1;
+ }
+
+ mmc_claim_host(card->host);
+ err = mmc_send_status(card, &status);
+ if (err) {
+ pr_err("%s: Get card status fail\n", mmc_hostname(card->host));
+ goto out;
+ }
+
+ /*
+ * If the card status is in PRG-state, we can send the HPI command.
+ */
+ if (R1_CURRENT_STATE(status) == R1_STATE_PRG) {
+ do {
+ /*
+ * We don't know when the HPI command will finish
+ * processing, so we need to resend HPI until out
+ * of prg-state, and keep checking the card status
+ * with SEND_STATUS. If a timeout error occurs when
+ * sending the HPI command, we are already out of
+ * prg-state.
+ */
+ err = mmc_send_hpi_cmd(card, &status);
+ if (err)
+ pr_debug("%s: abort HPI (%d error)\n",
+ mmc_hostname(card->host), err);
+
+ err = mmc_send_status(card, &status);
+ if (err)
+ break;
+ } while (R1_CURRENT_STATE(status) == R1_STATE_PRG);
+ } else
+ pr_debug("%s: Left prg-state\n", mmc_hostname(card->host));
+
+out:
+ mmc_release_host(card->host);
+ return err;
+}
+EXPORT_SYMBOL(mmc_interrupt_hpi);
+
+/**
* mmc_wait_for_cmd - start a command and wait for completion
* @host: MMC host to start command
* @cmd: MMC command to start
@@ -330,7 +448,7 @@ EXPORT_SYMBOL(mmc_wait_for_req);
*/
int mmc_wait_for_cmd(struct mmc_host *host, struct mmc_command *cmd, int retries)
{
- struct mmc_request mrq = {0};
+ struct mmc_request mrq = {NULL};
WARN_ON(!host->claimed);
@@ -1119,13 +1237,11 @@ static void mmc_power_up(struct mmc_host *host)
bit = fls(host->ocr_avail) - 1;
host->ios.vdd = bit;
- if (mmc_host_is_spi(host)) {
+ if (mmc_host_is_spi(host))
host->ios.chip_select = MMC_CS_HIGH;
- host->ios.bus_mode = MMC_BUSMODE_PUSHPULL;
- } else {
+ else
host->ios.chip_select = MMC_CS_DONTCARE;
- host->ios.bus_mode = MMC_BUSMODE_OPENDRAIN;
- }
+ host->ios.bus_mode = MMC_BUSMODE_PUSHPULL;
host->ios.power_mode = MMC_POWER_UP;
host->ios.bus_width = MMC_BUS_WIDTH_1;
host->ios.timing = MMC_TIMING_LEGACY;
@@ -1151,13 +1267,45 @@ static void mmc_power_up(struct mmc_host *host)
mmc_host_clk_release(host);
}
-static void mmc_power_off(struct mmc_host *host)
+void mmc_power_off(struct mmc_host *host)
{
+ struct mmc_card *card;
+ unsigned int notify_type;
+ unsigned int timeout;
+ int err;
+
mmc_host_clk_hold(host);
+ card = host->card;
host->ios.clock = 0;
host->ios.vdd = 0;
+ if (card && mmc_card_mmc(card) &&
+ (card->poweroff_notify_state == MMC_POWERED_ON)) {
+
+ if (host->power_notify_type == MMC_HOST_PW_NOTIFY_SHORT) {
+ notify_type = EXT_CSD_POWER_OFF_SHORT;
+ timeout = card->ext_csd.generic_cmd6_time;
+ card->poweroff_notify_state = MMC_POWEROFF_SHORT;
+ } else {
+ notify_type = EXT_CSD_POWER_OFF_LONG;
+ timeout = card->ext_csd.power_off_longtime;
+ card->poweroff_notify_state = MMC_POWEROFF_LONG;
+ }
+
+ err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_POWER_OFF_NOTIFICATION,
+ notify_type, timeout);
+
+ if (err && err != -EBADMSG)
+ pr_err("Device failed to respond within %d poweroff "
+ "time. Forcefully powering down the device\n",
+ timeout);
+
+ /* Set the card state to no notification after the poweroff */
+ card->poweroff_notify_state = MMC_NO_POWER_NOTIFICATION;
+ }
+
/*
* Reset ocr mask to be the highest possible voltage supported for
* this mmc host. This value will be used at next power up.
@@ -1173,6 +1321,13 @@ static void mmc_power_off(struct mmc_host *host)
host->ios.timing = MMC_TIMING_LEGACY;
mmc_set_ios(host);
+ /*
+ * Some configurations, such as the 802.11 SDIO card in the OLPC
+ * XO-1.5, require a short delay after poweroff before the card
+ * can be successfully turned on again.
+ */
+ mmc_delay(1);
+
mmc_host_clk_release(host);
}
@@ -1241,8 +1396,7 @@ void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops)
}
/*
- * Remove the current bus handler from a host. Assumes that there are
- * no interesting cards left, so the bus is powered down.
+ * Remove the current bus handler from a host.
*/
void mmc_detach_bus(struct mmc_host *host)
{
@@ -1259,8 +1413,6 @@ void mmc_detach_bus(struct mmc_host *host)
spin_unlock_irqrestore(&host->lock, flags);
- mmc_power_off(host);
-
mmc_bus_put(host);
}
@@ -1478,9 +1630,9 @@ static int mmc_do_erase(struct mmc_card *card, unsigned int from,
cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC;
err = mmc_wait_for_cmd(card->host, &cmd, 0);
if (err) {
- printk(KERN_ERR "mmc_erase: group start error %d, "
+ pr_err("mmc_erase: group start error %d, "
"status %#x\n", err, cmd.resp[0]);
- err = -EINVAL;
+ err = -EIO;
goto out;
}
@@ -1493,9 +1645,9 @@ static int mmc_do_erase(struct mmc_card *card, unsigned int from,
cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC;
err = mmc_wait_for_cmd(card->host, &cmd, 0);
if (err) {
- printk(KERN_ERR "mmc_erase: group end error %d, status %#x\n",
+ pr_err("mmc_erase: group end error %d, status %#x\n",
err, cmd.resp[0]);
- err = -EINVAL;
+ err = -EIO;
goto out;
}
@@ -1506,7 +1658,7 @@ static int mmc_do_erase(struct mmc_card *card, unsigned int from,
cmd.cmd_timeout_ms = mmc_erase_timeout(card, arg, qty);
err = mmc_wait_for_cmd(card->host, &cmd, 0);
if (err) {
- printk(KERN_ERR "mmc_erase: erase error %d, status %#x\n",
+ pr_err("mmc_erase: erase error %d, status %#x\n",
err, cmd.resp[0]);
err = -EIO;
goto out;
@@ -1523,7 +1675,7 @@ static int mmc_do_erase(struct mmc_card *card, unsigned int from,
/* Do not retry else we can't see errors */
err = mmc_wait_for_cmd(card->host, &cmd, 0);
if (err || (cmd.resp[0] & 0xFDF92000)) {
- printk(KERN_ERR "error %d requesting status %#x\n",
+ pr_err("error %d requesting status %#x\n",
err, cmd.resp[0]);
err = -EIO;
goto out;
@@ -1614,10 +1766,32 @@ int mmc_can_trim(struct mmc_card *card)
{
if (card->ext_csd.sec_feature_support & EXT_CSD_SEC_GB_CL_EN)
return 1;
+ if (mmc_can_discard(card))
+ return 1;
return 0;
}
EXPORT_SYMBOL(mmc_can_trim);
+int mmc_can_discard(struct mmc_card *card)
+{
+ /*
+ * As there's no way to detect the discard support bit at v4.5
+ * use the s/w feature support filed.
+ */
+ if (card->ext_csd.feature_support & MMC_DISCARD_FEATURE)
+ return 1;
+ return 0;
+}
+EXPORT_SYMBOL(mmc_can_discard);
+
+int mmc_can_sanitize(struct mmc_card *card)
+{
+ if (card->ext_csd.sec_feature_support & EXT_CSD_SEC_SANITIZE)
+ return 1;
+ return 0;
+}
+EXPORT_SYMBOL(mmc_can_sanitize);
+
int mmc_can_secure_erase_trim(struct mmc_card *card)
{
if (card->ext_csd.sec_feature_support & EXT_CSD_SEC_ER_EN)
@@ -1727,6 +1901,94 @@ int mmc_set_blocklen(struct mmc_card *card, unsigned int blocklen)
}
EXPORT_SYMBOL(mmc_set_blocklen);
+static void mmc_hw_reset_for_init(struct mmc_host *host)
+{
+ if (!(host->caps & MMC_CAP_HW_RESET) || !host->ops->hw_reset)
+ return;
+ mmc_host_clk_hold(host);
+ host->ops->hw_reset(host);
+ mmc_host_clk_release(host);
+}
+
+int mmc_can_reset(struct mmc_card *card)
+{
+ u8 rst_n_function;
+
+ if (!mmc_card_mmc(card))
+ return 0;
+ rst_n_function = card->ext_csd.rst_n_function;
+ if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED)
+ return 0;
+ return 1;
+}
+EXPORT_SYMBOL(mmc_can_reset);
+
+static int mmc_do_hw_reset(struct mmc_host *host, int check)
+{
+ struct mmc_card *card = host->card;
+
+ if (!host->bus_ops->power_restore)
+ return -EOPNOTSUPP;
+
+ if (!(host->caps & MMC_CAP_HW_RESET) || !host->ops->hw_reset)
+ return -EOPNOTSUPP;
+
+ if (!card)
+ return -EINVAL;
+
+ if (!mmc_can_reset(card))
+ return -EOPNOTSUPP;
+
+ mmc_host_clk_hold(host);
+ mmc_set_clock(host, host->f_init);
+
+ host->ops->hw_reset(host);
+
+ /* If the reset has happened, then a status command will fail */
+ if (check) {
+ struct mmc_command cmd = {0};
+ int err;
+
+ cmd.opcode = MMC_SEND_STATUS;
+ if (!mmc_host_is_spi(card->host))
+ cmd.arg = card->rca << 16;
+ cmd.flags = MMC_RSP_SPI_R2 | MMC_RSP_R1 | MMC_CMD_AC;
+ err = mmc_wait_for_cmd(card->host, &cmd, 0);
+ if (!err) {
+ mmc_host_clk_release(host);
+ return -ENOSYS;
+ }
+ }
+
+ host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_DDR);
+ if (mmc_host_is_spi(host)) {
+ host->ios.chip_select = MMC_CS_HIGH;
+ host->ios.bus_mode = MMC_BUSMODE_PUSHPULL;
+ } else {
+ host->ios.chip_select = MMC_CS_DONTCARE;
+ host->ios.bus_mode = MMC_BUSMODE_OPENDRAIN;
+ }
+ host->ios.bus_width = MMC_BUS_WIDTH_1;
+ host->ios.timing = MMC_TIMING_LEGACY;
+ mmc_set_ios(host);
+
+ mmc_host_clk_release(host);
+
+ return host->bus_ops->power_restore(host);
+}
+
+int mmc_hw_reset(struct mmc_host *host)
+{
+ return mmc_do_hw_reset(host, 0);
+}
+EXPORT_SYMBOL(mmc_hw_reset);
+
+int mmc_hw_reset_check(struct mmc_host *host)
+{
+ return mmc_do_hw_reset(host, 1);
+}
+EXPORT_SYMBOL(mmc_hw_reset_check);
+
static int mmc_rescan_try_freq(struct mmc_host *host, unsigned freq)
{
host->f_init = freq;
@@ -1738,6 +2000,12 @@ static int mmc_rescan_try_freq(struct mmc_host *host, unsigned freq)
mmc_power_up(host);
/*
+ * Some eMMCs (with VCCQ always on) may not be reset after power up, so
+ * do a hardware reset if possible.
+ */
+ mmc_hw_reset_for_init(host);
+
+ /*
* sdio_reset sends CMD52 to reset card. Since we do not know
* if the card is being re-initialized, just send it. CMD52
* should be ignored by SD/eMMC cards.
@@ -1845,6 +2113,7 @@ void mmc_stop_host(struct mmc_host *host)
mmc_claim_host(host);
mmc_detach_bus(host);
+ mmc_power_off(host);
mmc_release_host(host);
mmc_bus_put(host);
return;
@@ -1946,6 +2215,65 @@ int mmc_card_can_sleep(struct mmc_host *host)
}
EXPORT_SYMBOL(mmc_card_can_sleep);
+/*
+ * Flush the cache to the non-volatile storage.
+ */
+int mmc_flush_cache(struct mmc_card *card)
+{
+ struct mmc_host *host = card->host;
+ int err = 0;
+
+ if (!(host->caps2 & MMC_CAP2_CACHE_CTRL))
+ return err;
+
+ if (mmc_card_mmc(card) &&
+ (card->ext_csd.cache_size > 0) &&
+ (card->ext_csd.cache_ctrl & 1)) {
+ err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_FLUSH_CACHE, 1, 0);
+ if (err)
+ pr_err("%s: cache flush error %d\n",
+ mmc_hostname(card->host), err);
+ }
+
+ return err;
+}
+EXPORT_SYMBOL(mmc_flush_cache);
+
+/*
+ * Turn the cache ON/OFF.
+ * Turning the cache OFF shall trigger flushing of the data
+ * to the non-volatile storage.
+ */
+int mmc_cache_ctrl(struct mmc_host *host, u8 enable)
+{
+ struct mmc_card *card = host->card;
+ int err = 0;
+
+ if (!(host->caps2 & MMC_CAP2_CACHE_CTRL) ||
+ mmc_card_is_removable(host))
+ return err;
+
+ if (card && mmc_card_mmc(card) &&
+ (card->ext_csd.cache_size > 0)) {
+ enable = !!enable;
+
+ if (card->ext_csd.cache_ctrl ^ enable)
+ err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_CACHE_CTRL, enable, 0);
+ if (err)
+ pr_err("%s: cache %s error %d\n",
+ mmc_hostname(card->host),
+ enable ? "on" : "off",
+ err);
+ else
+ card->ext_csd.cache_ctrl = enable;
+ }
+
+ return err;
+}
+EXPORT_SYMBOL(mmc_cache_ctrl);
+
#ifdef CONFIG_PM
/**
@@ -1960,23 +2288,39 @@ int mmc_suspend_host(struct mmc_host *host)
cancel_delayed_work(&host->disable);
cancel_delayed_work(&host->detect);
mmc_flush_scheduled_work();
+ err = mmc_cache_ctrl(host, 0);
+ if (err)
+ goto out;
mmc_bus_get(host);
if (host->bus_ops && !host->bus_dead) {
- if (host->bus_ops->suspend)
- err = host->bus_ops->suspend(host);
- if (err == -ENOSYS || !host->bus_ops->resume) {
- /*
- * We simply "remove" the card in this case.
- * It will be redetected on resume.
- */
- if (host->bus_ops->remove)
- host->bus_ops->remove(host);
- mmc_claim_host(host);
- mmc_detach_bus(host);
- mmc_release_host(host);
- host->pm_flags = 0;
- err = 0;
+
+ /*
+ * A long response time is not acceptable for device drivers
+ * when doing suspend. Prevent mmc_claim_host in the suspend
+ * sequence, to potentially wait "forever" by trying to
+ * pre-claim the host.
+ */
+ if (mmc_try_claim_host(host)) {
+ if (host->bus_ops->suspend)
+ err = host->bus_ops->suspend(host);
+ if (err == -ENOSYS || !host->bus_ops->resume) {
+ /*
+ * We simply "remove" the card in this case.
+ * It will be redetected on resume.
+ */
+ if (host->bus_ops->remove)
+ host->bus_ops->remove(host);
+ mmc_claim_host(host);
+ mmc_detach_bus(host);
+ mmc_power_off(host);
+ mmc_release_host(host);
+ host->pm_flags = 0;
+ err = 0;
+ }
+ mmc_do_release_host(host);
+ } else {
+ err = -EBUSY;
}
}
mmc_bus_put(host);
@@ -1984,6 +2328,7 @@ int mmc_suspend_host(struct mmc_host *host)
if (!err && !mmc_card_keep_power(host))
mmc_power_off(host);
+out:
return err;
}
@@ -2018,7 +2363,7 @@ int mmc_resume_host(struct mmc_host *host)
BUG_ON(!host->bus_ops->resume);
err = host->bus_ops->resume(host);
if (err) {
- printk(KERN_WARNING "%s: error %d during resume "
+ pr_warning("%s: error %d during resume "
"(card was removed?)\n",
mmc_hostname(host), err);
err = 0;
@@ -2049,6 +2394,7 @@ int mmc_pm_notify(struct notifier_block *notify_block,
spin_lock_irqsave(&host->lock, flags);
host->rescan_disable = 1;
+ host->power_notify_type = MMC_HOST_PW_NOTIFY_SHORT;
spin_unlock_irqrestore(&host->lock, flags);
cancel_delayed_work_sync(&host->detect);
@@ -2061,6 +2407,7 @@ int mmc_pm_notify(struct notifier_block *notify_block,
host->bus_ops->remove(host);
mmc_detach_bus(host);
+ mmc_power_off(host);
mmc_release_host(host);
host->pm_flags = 0;
break;
@@ -2071,6 +2418,7 @@ int mmc_pm_notify(struct notifier_block *notify_block,
spin_lock_irqsave(&host->lock, flags);
host->rescan_disable = 0;
+ host->power_notify_type = MMC_HOST_PW_NOTIFY_LONG;
spin_unlock_irqrestore(&host->lock, flags);
mmc_detect_change(host, 0);
diff --git a/drivers/mmc/core/core.h b/drivers/mmc/core/core.h
index d9411ed2a39b..14664f1fb16f 100644
--- a/drivers/mmc/core/core.h
+++ b/drivers/mmc/core/core.h
@@ -43,6 +43,7 @@ int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage,
bool cmd11);
void mmc_set_timing(struct mmc_host *host, unsigned int timing);
void mmc_set_driver_type(struct mmc_host *host, unsigned int drv_type);
+void mmc_power_off(struct mmc_host *host);
static inline void mmc_delay(unsigned int ms)
{
diff --git a/drivers/mmc/core/debugfs.c b/drivers/mmc/core/debugfs.c
index 998797ed67a6..6045ea469362 100644
--- a/drivers/mmc/core/debugfs.c
+++ b/drivers/mmc/core/debugfs.c
@@ -7,11 +7,13 @@
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
+#include <linux/moduleparam.h>
#include <linux/debugfs.h>
#include <linux/fs.h>
#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/stat.h>
+#include <linux/fault-inject.h>
#include <linux/mmc/card.h>
#include <linux/mmc/host.h>
@@ -19,6 +21,14 @@
#include "core.h"
#include "mmc_ops.h"
+#ifdef CONFIG_FAIL_MMC_REQUEST
+
+static DECLARE_FAULT_ATTR(fail_default_attr);
+static char *fail_request;
+module_param(fail_request, charp, 0);
+
+#endif /* CONFIG_FAIL_MMC_REQUEST */
+
/* The debugfs functions are optimized away when CONFIG_DEBUG_FS isn't set. */
static int mmc_ios_show(struct seq_file *s, void *data)
{
@@ -113,6 +123,15 @@ static int mmc_ios_show(struct seq_file *s, void *data)
case MMC_TIMING_SD_HS:
str = "sd high-speed";
break;
+ case MMC_TIMING_UHS_SDR50:
+ str = "sd uhs SDR50";
+ break;
+ case MMC_TIMING_UHS_SDR104:
+ str = "sd uhs SDR104";
+ break;
+ case MMC_TIMING_UHS_DDR50:
+ str = "sd uhs DDR50";
+ break;
default:
str = "invalid";
break;
@@ -188,6 +207,15 @@ void mmc_add_host_debugfs(struct mmc_host *host)
root, &host->clk_delay))
goto err_node;
#endif
+#ifdef CONFIG_FAIL_MMC_REQUEST
+ if (fail_request)
+ setup_fault_attr(&fail_default_attr, fail_request);
+ host->fail_mmc_request = fail_default_attr;
+ if (IS_ERR(fault_create_debugfs_attr("fail_mmc_request",
+ root,
+ &host->fail_mmc_request)))
+ goto err_node;
+#endif
return;
err_node:
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
index 793d0a0dad8d..ca2e4f50f615 100644
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -301,6 +301,17 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
host->max_blk_size = 512;
host->max_blk_count = PAGE_CACHE_SIZE / 512;
+ /*
+ * Enable runtime power management by default. This flag was added due
+ * to runtime power management causing disruption for some users, but
+ * the power on/off code has been improved since then.
+ *
+ * We'll enable this flag by default as an experiment, and if no
+ * problems are reported, we will follow up later and remove the flag
+ * altogether.
+ */
+ host->caps = MMC_CAP_POWER_OFF_CARD;
+
return host;
free:
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 5700b1cbdfec..36270449dd9d 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -101,7 +101,7 @@ static int mmc_decode_cid(struct mmc_card *card)
break;
default:
- printk(KERN_ERR "%s: card has unknown MMCA version %d\n",
+ pr_err("%s: card has unknown MMCA version %d\n",
mmc_hostname(card->host), card->csd.mmca_vsn);
return -EINVAL;
}
@@ -135,7 +135,7 @@ static int mmc_decode_csd(struct mmc_card *card)
*/
csd->structure = UNSTUFF_BITS(resp, 126, 2);
if (csd->structure == 0) {
- printk(KERN_ERR "%s: unrecognised CSD structure version %d\n",
+ pr_err("%s: unrecognised CSD structure version %d\n",
mmc_hostname(card->host), csd->structure);
return -EINVAL;
}
@@ -195,7 +195,7 @@ static int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd)
*/
ext_csd = kmalloc(512, GFP_KERNEL);
if (!ext_csd) {
- printk(KERN_ERR "%s: could not allocate a buffer to "
+ pr_err("%s: could not allocate a buffer to "
"receive the ext_csd.\n", mmc_hostname(card->host));
return -ENOMEM;
}
@@ -217,12 +217,12 @@ static int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd)
* stored in their CSD.
*/
if (card->csd.capacity == (4096 * 512)) {
- printk(KERN_ERR "%s: unable to read EXT_CSD "
+ pr_err("%s: unable to read EXT_CSD "
"on a possible high capacity card. "
"Card will be ignored.\n",
mmc_hostname(card->host));
} else {
- printk(KERN_WARNING "%s: unable to read "
+ pr_warning("%s: unable to read "
"EXT_CSD, performance might "
"suffer.\n",
mmc_hostname(card->host));
@@ -239,7 +239,9 @@ static int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd)
*/
static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
{
- int err = 0;
+ int err = 0, idx;
+ unsigned int part_size;
+ u8 hc_erase_grp_sz = 0, hc_wp_grp_sz = 0;
BUG_ON(!card);
@@ -250,7 +252,7 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE];
if (card->csd.structure == 3) {
if (card->ext_csd.raw_ext_csd_structure > 2) {
- printk(KERN_ERR "%s: unrecognised EXT_CSD structure "
+ pr_err("%s: unrecognised EXT_CSD structure "
"version %d\n", mmc_hostname(card->host),
card->ext_csd.raw_ext_csd_structure);
err = -EINVAL;
@@ -260,7 +262,7 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
card->ext_csd.rev = ext_csd[EXT_CSD_REV];
if (card->ext_csd.rev > 6) {
- printk(KERN_ERR "%s: unrecognised EXT_CSD revision %d\n",
+ pr_err("%s: unrecognised EXT_CSD revision %d\n",
mmc_hostname(card->host), card->ext_csd.rev);
err = -EINVAL;
goto out;
@@ -306,7 +308,7 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
break;
default:
/* MMC v4 spec says this cannot happen */
- printk(KERN_WARNING "%s: card is mmc v4 but doesn't "
+ pr_warning("%s: card is mmc v4 but doesn't "
"support any high-speed modes.\n",
mmc_hostname(card->host));
}
@@ -340,7 +342,14 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
* There are two boot regions of equal size, defined in
* multiples of 128K.
*/
- card->ext_csd.boot_size = ext_csd[EXT_CSD_BOOT_MULT] << 17;
+ if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) {
+ for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) {
+ part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17;
+ mmc_part_add(card, part_size,
+ EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx,
+ "boot%d", idx, true);
+ }
+ }
}
card->ext_csd.raw_hc_erase_gap_size =
@@ -359,11 +368,12 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
* card has the Enhanced area enabled. If so, export enhanced
* area offset and size to user by adding sysfs interface.
*/
+ card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT];
if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) &&
(ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) {
- u8 hc_erase_grp_sz =
+ hc_erase_grp_sz =
ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
- u8 hc_wp_grp_sz =
+ hc_wp_grp_sz =
ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
card->ext_csd.enhanced_area_en = 1;
@@ -392,6 +402,41 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
card->ext_csd.enhanced_area_offset = -EINVAL;
card->ext_csd.enhanced_area_size = -EINVAL;
}
+
+ /*
+ * General purpose partition feature support --
+ * If ext_csd has the size of general purpose partitions,
+ * set size, part_cfg, partition name in mmc_part.
+ */
+ if (ext_csd[EXT_CSD_PARTITION_SUPPORT] &
+ EXT_CSD_PART_SUPPORT_PART_EN) {
+ if (card->ext_csd.enhanced_area_en != 1) {
+ hc_erase_grp_sz =
+ ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
+ hc_wp_grp_sz =
+ ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
+
+ card->ext_csd.enhanced_area_en = 1;
+ }
+
+ for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) {
+ if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] &&
+ !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] &&
+ !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2])
+ continue;
+ part_size =
+ (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]
+ << 16) +
+ (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1]
+ << 8) +
+ ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3];
+ part_size *= (size_t)(hc_erase_grp_sz *
+ hc_wp_grp_sz);
+ mmc_part_add(card, part_size << 19,
+ EXT_CSD_PART_CONFIG_ACC_GP0 + idx,
+ "gp%d", idx, false);
+ }
+ }
card->ext_csd.sec_trim_mult =
ext_csd[EXT_CSD_SEC_TRIM_MULT];
card->ext_csd.sec_erase_mult =
@@ -402,14 +447,48 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
ext_csd[EXT_CSD_TRIM_MULT];
}
- if (card->ext_csd.rev >= 5)
+ if (card->ext_csd.rev >= 5) {
+ /* check whether the eMMC card supports HPI */
+ if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) {
+ card->ext_csd.hpi = 1;
+ if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2)
+ card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION;
+ else
+ card->ext_csd.hpi_cmd = MMC_SEND_STATUS;
+ /*
+ * Indicate the maximum timeout to close
+ * a command interrupted by HPI
+ */
+ card->ext_csd.out_of_int_time =
+ ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10;
+ }
+
card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM];
+ card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION];
+ }
+ card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT];
if (ext_csd[EXT_CSD_ERASED_MEM_CONT])
card->erased_byte = 0xFF;
else
card->erased_byte = 0x0;
+ /* eMMC v4.5 or later */
+ if (card->ext_csd.rev >= 6) {
+ card->ext_csd.feature_support |= MMC_DISCARD_FEATURE;
+
+ card->ext_csd.generic_cmd6_time = 10 *
+ ext_csd[EXT_CSD_GENERIC_CMD6_TIME];
+ card->ext_csd.power_off_longtime = 10 *
+ ext_csd[EXT_CSD_POWER_OFF_LONG_TIME];
+
+ card->ext_csd.cache_size =
+ ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 |
+ ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 |
+ ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 |
+ ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24;
+ }
+
out:
return err;
}
@@ -530,6 +609,86 @@ static struct device_type mmc_type = {
};
/*
+ * Select the PowerClass for the current bus width
+ * If power class is defined for 4/8 bit bus in the
+ * extended CSD register, select it by executing the
+ * mmc_switch command.
+ */
+static int mmc_select_powerclass(struct mmc_card *card,
+ unsigned int bus_width, u8 *ext_csd)
+{
+ int err = 0;
+ unsigned int pwrclass_val;
+ unsigned int index = 0;
+ struct mmc_host *host;
+
+ BUG_ON(!card);
+
+ host = card->host;
+ BUG_ON(!host);
+
+ if (ext_csd == NULL)
+ return 0;
+
+ /* Power class selection is supported for versions >= 4.0 */
+ if (card->csd.mmca_vsn < CSD_SPEC_VER_4)
+ return 0;
+
+ /* Power class values are defined only for 4/8 bit bus */
+ if (bus_width == EXT_CSD_BUS_WIDTH_1)
+ return 0;
+
+ switch (1 << host->ios.vdd) {
+ case MMC_VDD_165_195:
+ if (host->ios.clock <= 26000000)
+ index = EXT_CSD_PWR_CL_26_195;
+ else if (host->ios.clock <= 52000000)
+ index = (bus_width <= EXT_CSD_BUS_WIDTH_8) ?
+ EXT_CSD_PWR_CL_52_195 :
+ EXT_CSD_PWR_CL_DDR_52_195;
+ else if (host->ios.clock <= 200000000)
+ index = EXT_CSD_PWR_CL_200_195;
+ break;
+ case MMC_VDD_32_33:
+ case MMC_VDD_33_34:
+ case MMC_VDD_34_35:
+ case MMC_VDD_35_36:
+ if (host->ios.clock <= 26000000)
+ index = EXT_CSD_PWR_CL_26_360;
+ else if (host->ios.clock <= 52000000)
+ index = (bus_width <= EXT_CSD_BUS_WIDTH_8) ?
+ EXT_CSD_PWR_CL_52_360 :
+ EXT_CSD_PWR_CL_DDR_52_360;
+ else if (host->ios.clock <= 200000000)
+ index = EXT_CSD_PWR_CL_200_360;
+ break;
+ default:
+ pr_warning("%s: Voltage range not supported "
+ "for power class.\n", mmc_hostname(host));
+ return -EINVAL;
+ }
+
+ pwrclass_val = ext_csd[index];
+
+ if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8))
+ pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >>
+ EXT_CSD_PWR_CL_8BIT_SHIFT;
+ else
+ pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >>
+ EXT_CSD_PWR_CL_4BIT_SHIFT;
+
+ /* If the power class is different from the default value */
+ if (pwrclass_val > 0) {
+ err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_POWER_CLASS,
+ pwrclass_val,
+ card->ext_csd.generic_cmd6_time);
+ }
+
+ return err;
+}
+
+/*
* Handle the detection and initialisation of a card.
*
* In the case of a resume, "oldcard" will contain the card
@@ -548,11 +707,16 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
BUG_ON(!host);
WARN_ON(!host->claimed);
+ /* Set correct bus mode for MMC before attempting init */
+ if (!mmc_host_is_spi(host))
+ mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN);
+
/*
* Since we're changing the OCR value, we seem to
* need to tell some cards to go back to the idle
* state. We wait 1ms to give cards time to
* respond.
+ * mmc_go_idle is needed for eMMC that are asleep
*/
mmc_go_idle(host);
@@ -668,7 +832,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
*/
if (card->ext_csd.enhanced_area_en) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
- EXT_CSD_ERASE_GROUP_DEF, 1, 0);
+ EXT_CSD_ERASE_GROUP_DEF, 1,
+ card->ext_csd.generic_cmd6_time);
if (err && err != -EBADMSG)
goto free_card;
@@ -706,17 +871,35 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
}
/*
+ * If the host supports the power_off_notify capability then
+ * set the notification byte in the ext_csd register of device
+ */
+ if ((host->caps2 & MMC_CAP2_POWEROFF_NOTIFY) &&
+ (card->poweroff_notify_state == MMC_NO_POWER_NOTIFICATION)) {
+ err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_POWER_OFF_NOTIFICATION,
+ EXT_CSD_POWER_ON,
+ card->ext_csd.generic_cmd6_time);
+ if (err && err != -EBADMSG)
+ goto free_card;
+ }
+
+ if (!err)
+ card->poweroff_notify_state = MMC_POWERED_ON;
+
+ /*
* Activate high speed (if supported)
*/
if ((card->ext_csd.hs_max_dtr != 0) &&
(host->caps & MMC_CAP_MMC_HIGHSPEED)) {
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
- EXT_CSD_HS_TIMING, 1, 0);
+ EXT_CSD_HS_TIMING, 1,
+ card->ext_csd.generic_cmd6_time);
if (err && err != -EBADMSG)
goto free_card;
if (err) {
- printk(KERN_WARNING "%s: switch to highspeed failed\n",
+ pr_warning("%s: switch to highspeed failed\n",
mmc_hostname(card->host));
err = 0;
} else {
@@ -726,6 +909,22 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
}
/*
+ * Enable HPI feature (if supported)
+ */
+ if (card->ext_csd.hpi) {
+ err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_HPI_MGMT, 1, 0);
+ if (err && err != -EBADMSG)
+ goto free_card;
+ if (err) {
+ pr_warning("%s: Enabling HPI failed\n",
+ mmc_hostname(card->host));
+ err = 0;
+ } else
+ card->ext_csd.hpi_en = 1;
+ }
+
+ /*
* Compute bus speed.
*/
max_dtr = (unsigned int)-1;
@@ -780,10 +979,18 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
bus_width = bus_widths[idx];
if (bus_width == MMC_BUS_WIDTH_1)
ddr = 0; /* no DDR for 1-bit width */
+ err = mmc_select_powerclass(card, ext_csd_bits[idx][0],
+ ext_csd);
+ if (err)
+ pr_err("%s: power class selection to "
+ "bus width %d failed\n",
+ mmc_hostname(card->host),
+ 1 << bus_width);
+
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH,
ext_csd_bits[idx][0],
- 0);
+ card->ext_csd.generic_cmd6_time);
if (!err) {
mmc_set_bus_width(card->host, bus_width);
@@ -803,13 +1010,21 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
}
if (!err && ddr) {
+ err = mmc_select_powerclass(card, ext_csd_bits[idx][1],
+ ext_csd);
+ if (err)
+ pr_err("%s: power class selection to "
+ "bus width %d ddr %d failed\n",
+ mmc_hostname(card->host),
+ 1 << bus_width, ddr);
+
err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH,
ext_csd_bits[idx][1],
- 0);
+ card->ext_csd.generic_cmd6_time);
}
if (err) {
- printk(KERN_WARNING "%s: switch to bus width %d ddr %d "
+ pr_warning("%s: switch to bus width %d ddr %d "
"failed\n", mmc_hostname(card->host),
1 << bus_width, ddr);
goto free_card;
@@ -840,6 +1055,23 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
}
}
+ /*
+ * If cache size is higher than 0, this indicates
+ * the existence of cache and it can be turned on.
+ */
+ if ((host->caps2 & MMC_CAP2_CACHE_CTRL) &&
+ card->ext_csd.cache_size > 0) {
+ err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_CACHE_CTRL, 1, 0);
+ if (err && err != -EBADMSG)
+ goto free_card;
+
+ /*
+ * Only if no error, cache is turned on successfully.
+ */
+ card->ext_csd.cache_ctrl = err ? 0 : 1;
+ }
+
if (!oldcard)
host->card = card;
@@ -891,6 +1123,7 @@ static void mmc_detect(struct mmc_host *host)
mmc_claim_host(host);
mmc_detach_bus(host);
+ mmc_power_off(host);
mmc_release_host(host);
}
}
@@ -900,16 +1133,20 @@ static void mmc_detect(struct mmc_host *host)
*/
static int mmc_suspend(struct mmc_host *host)
{
+ int err = 0;
+
BUG_ON(!host);
BUG_ON(!host->card);
mmc_claim_host(host);
- if (!mmc_host_is_spi(host))
+ if (mmc_card_can_sleep(host))
+ err = mmc_card_sleep(host);
+ else if (!mmc_host_is_spi(host))
mmc_deselect_cards(host);
host->card->state &= ~MMC_STATE_HIGHSPEED;
mmc_release_host(host);
- return 0;
+ return err;
}
/*
@@ -1016,6 +1253,10 @@ int mmc_attach_mmc(struct mmc_host *host)
BUG_ON(!host);
WARN_ON(!host->claimed);
+ /* Set correct bus mode for MMC before attempting attach */
+ if (!mmc_host_is_spi(host))
+ mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN);
+
err = mmc_send_op_cond(host, 0, &ocr);
if (err)
return err;
@@ -1038,7 +1279,7 @@ int mmc_attach_mmc(struct mmc_host *host)
* support.
*/
if (ocr & 0x7F) {
- printk(KERN_WARNING "%s: card claims to support voltages "
+ pr_warning("%s: card claims to support voltages "
"below the defined range. These will be ignored.\n",
mmc_hostname(host));
ocr &= ~0x7F;
@@ -1077,7 +1318,7 @@ remove_card:
err:
mmc_detach_bus(host);
- printk(KERN_ERR "%s: error %d whilst initialising MMC card\n",
+ pr_err("%s: error %d whilst initialising MMC card\n",
mmc_hostname(host), err);
return err;
diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c
index 770c3d06f5dc..007863eea4fb 100644
--- a/drivers/mmc/core/mmc_ops.c
+++ b/drivers/mmc/core/mmc_ops.c
@@ -233,7 +233,7 @@ static int
mmc_send_cxd_data(struct mmc_card *card, struct mmc_host *host,
u32 opcode, void *buf, unsigned len)
{
- struct mmc_request mrq = {0};
+ struct mmc_request mrq = {NULL};
struct mmc_command cmd = {0};
struct mmc_data data = {0};
struct scatterlist sg;
@@ -414,7 +414,7 @@ int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value,
return -EBADMSG;
} else {
if (status & 0xFDFFA000)
- printk(KERN_WARNING "%s: unexpected status %#x after "
+ pr_warning("%s: unexpected status %#x after "
"switch", mmc_hostname(card->host), status);
if (status & R1_SWITCH_ERROR)
return -EBADMSG;
@@ -454,7 +454,7 @@ static int
mmc_send_bus_test(struct mmc_card *card, struct mmc_host *host, u8 opcode,
u8 len)
{
- struct mmc_request mrq = {0};
+ struct mmc_request mrq = {NULL};
struct mmc_command cmd = {0};
struct mmc_data data = {0};
struct scatterlist sg;
@@ -476,7 +476,7 @@ mmc_send_bus_test(struct mmc_card *card, struct mmc_host *host, u8 opcode,
else if (len == 4)
test_buf = testdata_4bit;
else {
- printk(KERN_ERR "%s: Invalid bus_width %d\n",
+ pr_err("%s: Invalid bus_width %d\n",
mmc_hostname(host), len);
kfree(data_buf);
return -EINVAL;
@@ -547,3 +547,34 @@ int mmc_bus_test(struct mmc_card *card, u8 bus_width)
err = mmc_send_bus_test(card, card->host, MMC_BUS_TEST_R, width);
return err;
}
+
+int mmc_send_hpi_cmd(struct mmc_card *card, u32 *status)
+{
+ struct mmc_command cmd = {0};
+ unsigned int opcode;
+ unsigned int flags;
+ int err;
+
+ opcode = card->ext_csd.hpi_cmd;
+ if (opcode == MMC_STOP_TRANSMISSION)
+ flags = MMC_RSP_R1 | MMC_CMD_AC;
+ else if (opcode == MMC_SEND_STATUS)
+ flags = MMC_RSP_R1 | MMC_CMD_AC;
+
+ cmd.opcode = opcode;
+ cmd.arg = card->rca << 16 | 1;
+ cmd.flags = flags;
+ cmd.cmd_timeout_ms = card->ext_csd.out_of_int_time;
+
+ err = mmc_wait_for_cmd(card->host, &cmd, 0);
+ if (err) {
+ pr_warn("%s: error %d interrupting operation. "
+ "HPI command response %#x\n", mmc_hostname(card->host),
+ err, cmd.resp[0]);
+ return err;
+ }
+ if (status)
+ *status = cmd.resp[0];
+
+ return 0;
+}
diff --git a/drivers/mmc/core/mmc_ops.h b/drivers/mmc/core/mmc_ops.h
index 9276946fa5b7..3dd8941c2980 100644
--- a/drivers/mmc/core/mmc_ops.h
+++ b/drivers/mmc/core/mmc_ops.h
@@ -26,6 +26,7 @@ int mmc_spi_read_ocr(struct mmc_host *host, int highcap, u32 *ocrp);
int mmc_spi_set_crc(struct mmc_host *host, int use_crc);
int mmc_card_sleepawake(struct mmc_host *host, int sleep);
int mmc_bus_test(struct mmc_card *card, u8 bus_width);
+int mmc_send_hpi_cmd(struct mmc_card *card, u32 *status);
#endif
diff --git a/drivers/mmc/core/quirks.c b/drivers/mmc/core/quirks.c
index 3a596217029e..6c3cf98a62eb 100644
--- a/drivers/mmc/core/quirks.c
+++ b/drivers/mmc/core/quirks.c
@@ -21,6 +21,14 @@
#define SDIO_DEVICE_ID_TI_WL1271 0x4076
#endif
+#ifndef SDIO_VENDOR_ID_STE
+#define SDIO_VENDOR_ID_STE 0x0020
+#endif
+
+#ifndef SDIO_DEVICE_ID_STE_CW1200
+#define SDIO_DEVICE_ID_STE_CW1200 0x2280
+#endif
+
/*
* This hook just adds a quirk for all sdio devices
*/
@@ -46,6 +54,9 @@ static const struct mmc_fixup mmc_fixup_methods[] = {
SDIO_FIXUP(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1271,
add_quirk, MMC_QUIRK_DISABLE_CD),
+ SDIO_FIXUP(SDIO_VENDOR_ID_STE, SDIO_DEVICE_ID_STE_CW1200,
+ add_quirk, MMC_QUIRK_BROKEN_BYTE_MODE_512),
+
END_FIXUP
};
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index 0370e03e3142..a230e7f9d77a 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -163,7 +163,7 @@ static int mmc_decode_csd(struct mmc_card *card)
csd->erase_size = 1;
break;
default:
- printk(KERN_ERR "%s: unrecognised CSD structure version %d\n",
+ pr_err("%s: unrecognised CSD structure version %d\n",
mmc_hostname(card->host), csd_struct);
return -EINVAL;
}
@@ -187,7 +187,7 @@ static int mmc_decode_scr(struct mmc_card *card)
scr_struct = UNSTUFF_BITS(resp, 60, 4);
if (scr_struct != 0) {
- printk(KERN_ERR "%s: unrecognised SCR structure version %d\n",
+ pr_err("%s: unrecognised SCR structure version %d\n",
mmc_hostname(card->host), scr_struct);
return -EINVAL;
}
@@ -218,7 +218,7 @@ static int mmc_read_ssr(struct mmc_card *card)
u32 *ssr;
if (!(card->csd.cmdclass & CCC_APP_SPEC)) {
- printk(KERN_WARNING "%s: card lacks mandatory SD Status "
+ pr_warning("%s: card lacks mandatory SD Status "
"function.\n", mmc_hostname(card->host));
return 0;
}
@@ -229,7 +229,7 @@ static int mmc_read_ssr(struct mmc_card *card)
err = mmc_app_sd_status(card, ssr);
if (err) {
- printk(KERN_WARNING "%s: problem reading SD Status "
+ pr_warning("%s: problem reading SD Status "
"register.\n", mmc_hostname(card->host));
err = 0;
goto out;
@@ -253,7 +253,7 @@ static int mmc_read_ssr(struct mmc_card *card)
card->ssr.erase_offset = eo * 1000;
}
} else {
- printk(KERN_WARNING "%s: SD Status: Invalid Allocation Unit "
+ pr_warning("%s: SD Status: Invalid Allocation Unit "
"size.\n", mmc_hostname(card->host));
}
out:
@@ -273,7 +273,7 @@ static int mmc_read_switch(struct mmc_card *card)
return 0;
if (!(card->csd.cmdclass & CCC_SWITCH)) {
- printk(KERN_WARNING "%s: card lacks mandatory switch "
+ pr_warning("%s: card lacks mandatory switch "
"function, performance might suffer.\n",
mmc_hostname(card->host));
return 0;
@@ -283,7 +283,7 @@ static int mmc_read_switch(struct mmc_card *card)
status = kmalloc(64, GFP_KERNEL);
if (!status) {
- printk(KERN_ERR "%s: could not allocate a buffer for "
+ pr_err("%s: could not allocate a buffer for "
"switch capabilities.\n",
mmc_hostname(card->host));
return -ENOMEM;
@@ -299,13 +299,16 @@ static int mmc_read_switch(struct mmc_card *card)
if (err != -EINVAL && err != -ENOSYS && err != -EFAULT)
goto out;
- printk(KERN_WARNING "%s: problem reading Bus Speed modes.\n",
+ pr_warning("%s: problem reading Bus Speed modes.\n",
mmc_hostname(card->host));
err = 0;
goto out;
}
+ if (status[13] & UHS_SDR50_BUS_SPEED)
+ card->sw_caps.hs_max_dtr = 50000000;
+
if (card->scr.sda_spec3) {
card->sw_caps.sd3_bus_mode = status[13];
@@ -319,7 +322,7 @@ static int mmc_read_switch(struct mmc_card *card)
if (err != -EINVAL && err != -ENOSYS && err != -EFAULT)
goto out;
- printk(KERN_WARNING "%s: problem reading "
+ pr_warning("%s: problem reading "
"Driver Strength.\n",
mmc_hostname(card->host));
err = 0;
@@ -339,7 +342,7 @@ static int mmc_read_switch(struct mmc_card *card)
if (err != -EINVAL && err != -ENOSYS && err != -EFAULT)
goto out;
- printk(KERN_WARNING "%s: problem reading "
+ pr_warning("%s: problem reading "
"Current Limit.\n",
mmc_hostname(card->host));
err = 0;
@@ -348,9 +351,6 @@ static int mmc_read_switch(struct mmc_card *card)
}
card->sw_caps.sd3_curr_limit = status[7];
- } else {
- if (status[13] & 0x02)
- card->sw_caps.hs_max_dtr = 50000000;
}
out:
@@ -383,7 +383,7 @@ int mmc_sd_switch_hs(struct mmc_card *card)
status = kmalloc(64, GFP_KERNEL);
if (!status) {
- printk(KERN_ERR "%s: could not allocate a buffer for "
+ pr_err("%s: could not allocate a buffer for "
"switch capabilities.\n", mmc_hostname(card->host));
return -ENOMEM;
}
@@ -393,7 +393,7 @@ int mmc_sd_switch_hs(struct mmc_card *card)
goto out;
if ((status[16] & 0xF) != 1) {
- printk(KERN_WARNING "%s: Problem switching card "
+ pr_warning("%s: Problem switching card "
"into high-speed mode!\n",
mmc_hostname(card->host));
err = 0;
@@ -459,7 +459,7 @@ static int sd_select_driver_type(struct mmc_card *card, u8 *status)
return err;
if ((status[15] & 0xF) != drive_strength) {
- printk(KERN_WARNING "%s: Problem setting drive strength!\n",
+ pr_warning("%s: Problem setting drive strength!\n",
mmc_hostname(card->host));
return 0;
}
@@ -538,7 +538,7 @@ static int sd_set_bus_speed_mode(struct mmc_card *card, u8 *status)
return err;
if ((status[16] & 0xF) != card->sd_bus_speed)
- printk(KERN_WARNING "%s: Problem setting bus speed mode!\n",
+ pr_warning("%s: Problem setting bus speed mode!\n",
mmc_hostname(card->host));
else {
mmc_set_timing(card->host, timing);
@@ -600,7 +600,7 @@ static int sd_set_current_limit(struct mmc_card *card, u8 *status)
return err;
if (((status[15] >> 4) & 0x0F) != current_limit)
- printk(KERN_WARNING "%s: Problem setting current limit!\n",
+ pr_warning("%s: Problem setting current limit!\n",
mmc_hostname(card->host));
return 0;
@@ -622,7 +622,7 @@ static int mmc_sd_init_uhs_card(struct mmc_card *card)
status = kmalloc(64, GFP_KERNEL);
if (!status) {
- printk(KERN_ERR "%s: could not allocate a buffer for "
+ pr_err("%s: could not allocate a buffer for "
"switch capabilities.\n", mmc_hostname(card->host));
return -ENOMEM;
}
@@ -852,7 +852,7 @@ int mmc_sd_setup_card(struct mmc_host *host, struct mmc_card *card,
ro = host->ops->get_ro(host);
if (ro < 0) {
- printk(KERN_WARNING "%s: host does not "
+ pr_warning("%s: host does not "
"support reading read-only "
"switch. assuming write-enable.\n",
mmc_hostname(host));
@@ -929,8 +929,6 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
err = mmc_send_relative_addr(host, &card->rca);
if (err)
return err;
-
- mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL);
}
if (!oldcard) {
@@ -1043,6 +1041,7 @@ static void mmc_sd_detect(struct mmc_host *host)
mmc_claim_host(host);
mmc_detach_bus(host);
+ mmc_power_off(host);
mmc_release_host(host);
}
}
@@ -1167,7 +1166,7 @@ int mmc_attach_sd(struct mmc_host *host)
* support.
*/
if (ocr & 0x7F) {
- printk(KERN_WARNING "%s: card claims to support voltages "
+ pr_warning("%s: card claims to support voltages "
"below the defined range. These will be ignored.\n",
mmc_hostname(host));
ocr &= ~0x7F;
@@ -1175,7 +1174,7 @@ int mmc_attach_sd(struct mmc_host *host)
if ((ocr & MMC_VDD_165_195) &&
!(host->ocr_avail_sd & MMC_VDD_165_195)) {
- printk(KERN_WARNING "%s: SD card claims to support the "
+ pr_warning("%s: SD card claims to support the "
"incompletely defined 'low voltage range'. This "
"will be ignored.\n", mmc_hostname(host));
ocr &= ~MMC_VDD_165_195;
@@ -1214,7 +1213,7 @@ remove_card:
err:
mmc_detach_bus(host);
- printk(KERN_ERR "%s: error %d whilst initialising SD card\n",
+ pr_err("%s: error %d whilst initialising SD card\n",
mmc_hostname(host), err);
return err;
diff --git a/drivers/mmc/core/sd_ops.c b/drivers/mmc/core/sd_ops.c
index 021fed153804..46a785419fab 100644
--- a/drivers/mmc/core/sd_ops.c
+++ b/drivers/mmc/core/sd_ops.c
@@ -67,7 +67,7 @@ EXPORT_SYMBOL_GPL(mmc_app_cmd);
int mmc_wait_for_app_cmd(struct mmc_host *host, struct mmc_card *card,
struct mmc_command *cmd, int retries)
{
- struct mmc_request mrq = {0};
+ struct mmc_request mrq = {NULL};
int i, err;
@@ -244,7 +244,7 @@ int mmc_send_relative_addr(struct mmc_host *host, unsigned int *rca)
int mmc_app_send_scr(struct mmc_card *card, u32 *scr)
{
int err;
- struct mmc_request mrq = {0};
+ struct mmc_request mrq = {NULL};
struct mmc_command cmd = {0};
struct mmc_data data = {0};
struct scatterlist sg;
@@ -303,7 +303,7 @@ int mmc_app_send_scr(struct mmc_card *card, u32 *scr)
int mmc_sd_switch(struct mmc_card *card, int mode, int group,
u8 value, u8 *resp)
{
- struct mmc_request mrq = {0};
+ struct mmc_request mrq = {NULL};
struct mmc_command cmd = {0};
struct mmc_data data = {0};
struct scatterlist sg;
@@ -348,7 +348,7 @@ int mmc_sd_switch(struct mmc_card *card, int mode, int group,
int mmc_app_sd_status(struct mmc_card *card, void *ssr)
{
int err;
- struct mmc_request mrq = {0};
+ struct mmc_request mrq = {NULL};
struct mmc_command cmd = {0};
struct mmc_data data = {0};
struct scatterlist sg;
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
index 262fff019177..3ab565e32a6a 100644
--- a/drivers/mmc/core/sdio.c
+++ b/drivers/mmc/core/sdio.c
@@ -111,8 +111,8 @@ static int sdio_read_cccr(struct mmc_card *card)
cccr_vsn = data & 0x0f;
- if (cccr_vsn > SDIO_CCCR_REV_1_20) {
- printk(KERN_ERR "%s: unrecognised CCCR structure version %d\n",
+ if (cccr_vsn > SDIO_CCCR_REV_3_00) {
+ pr_err("%s: unrecognised CCCR structure version %d\n",
mmc_hostname(card->host), cccr_vsn);
return -EINVAL;
}
@@ -408,8 +408,6 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr,
*/
if (oldcard)
oldcard->rca = card->rca;
-
- mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL);
}
/*
@@ -597,6 +595,7 @@ out:
mmc_claim_host(host);
mmc_detach_bus(host);
+ mmc_power_off(host);
mmc_release_host(host);
}
}
@@ -778,7 +777,7 @@ int mmc_attach_sdio(struct mmc_host *host)
* support.
*/
if (ocr & 0x7F) {
- printk(KERN_WARNING "%s: card claims to support voltages "
+ pr_warning("%s: card claims to support voltages "
"below the defined range. These will be ignored.\n",
mmc_hostname(host));
ocr &= ~0x7F;
@@ -875,7 +874,7 @@ remove:
err:
mmc_detach_bus(host);
- printk(KERN_ERR "%s: error %d whilst initialising SDIO card\n",
+ pr_err("%s: error %d whilst initialising SDIO card\n",
mmc_hostname(host), err);
return err;
diff --git a/drivers/mmc/core/sdio_bus.c b/drivers/mmc/core/sdio_bus.c
index e4e6822d09e3..c643b2f78bf1 100644
--- a/drivers/mmc/core/sdio_bus.c
+++ b/drivers/mmc/core/sdio_bus.c
@@ -173,7 +173,7 @@ static int sdio_bus_remove(struct device *dev)
drv->remove(func);
if (func->irq_handler) {
- printk(KERN_WARNING "WARNING: driver %s did not remove "
+ pr_warning("WARNING: driver %s did not remove "
"its interrupt handler!\n", drv->name);
sdio_claim_host(func);
sdio_release_irq(func);
diff --git a/drivers/mmc/core/sdio_cis.c b/drivers/mmc/core/sdio_cis.c
index 541bdb89e0c5..f1c7ed8f4d85 100644
--- a/drivers/mmc/core/sdio_cis.c
+++ b/drivers/mmc/core/sdio_cis.c
@@ -132,7 +132,7 @@ static int cis_tpl_parse(struct mmc_card *card, struct sdio_func *func,
ret = -EINVAL;
}
if (ret && ret != -EILSEQ && ret != -ENOENT) {
- printk(KERN_ERR "%s: bad %s tuple 0x%02x (%u bytes)\n",
+ pr_err("%s: bad %s tuple 0x%02x (%u bytes)\n",
mmc_hostname(card->host), tpl_descr, code, size);
}
} else {
@@ -313,7 +313,7 @@ static int sdio_read_cis(struct mmc_card *card, struct sdio_func *func)
if (ret == -ENOENT) {
/* warn about unknown tuples */
- printk(KERN_WARNING "%s: queuing unknown"
+ pr_warning("%s: queuing unknown"
" CIS tuple 0x%02x (%u bytes)\n",
mmc_hostname(card->host),
tpl_code, tpl_link);
diff --git a/drivers/mmc/core/sdio_irq.c b/drivers/mmc/core/sdio_irq.c
index 03ead028d2ce..b644dd59c16e 100644
--- a/drivers/mmc/core/sdio_irq.c
+++ b/drivers/mmc/core/sdio_irq.c
@@ -45,7 +45,7 @@ static int process_sdio_pending_irqs(struct mmc_card *card)
ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_INTx, 0, &pending);
if (ret) {
- printk(KERN_DEBUG "%s: error %d reading SDIO_CCCR_INTx\n",
+ pr_debug("%s: error %d reading SDIO_CCCR_INTx\n",
mmc_card_id(card), ret);
return ret;
}
@@ -55,7 +55,7 @@ static int process_sdio_pending_irqs(struct mmc_card *card)
if (pending & (1 << i)) {
func = card->sdio_func[i - 1];
if (!func) {
- printk(KERN_WARNING "%s: pending IRQ for "
+ pr_warning("%s: pending IRQ for "
"non-existent function\n",
mmc_card_id(card));
ret = -EINVAL;
@@ -63,7 +63,7 @@ static int process_sdio_pending_irqs(struct mmc_card *card)
func->irq_handler(func);
count++;
} else {
- printk(KERN_WARNING "%s: pending IRQ with no handler\n",
+ pr_warning("%s: pending IRQ with no handler\n",
sdio_func_id(func));
ret = -EINVAL;
}
diff --git a/drivers/mmc/core/sdio_ops.c b/drivers/mmc/core/sdio_ops.c
index f087d876c573..b0517cc06200 100644
--- a/drivers/mmc/core/sdio_ops.c
+++ b/drivers/mmc/core/sdio_ops.c
@@ -121,7 +121,7 @@ int mmc_io_rw_direct(struct mmc_card *card, int write, unsigned fn,
int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn,
unsigned addr, int incr_addr, u8 *buf, unsigned blocks, unsigned blksz)
{
- struct mmc_request mrq = {0};
+ struct mmc_request mrq = {NULL};
struct mmc_command cmd = {0};
struct mmc_data data = {0};
struct scatterlist sg;
@@ -144,8 +144,11 @@ int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn,
cmd.arg |= fn << 28;
cmd.arg |= incr_addr ? 0x04000000 : 0x00000000;
cmd.arg |= addr << 9;
- if (blocks == 1 && blksz <= 512)
- cmd.arg |= (blksz == 512) ? 0 : blksz; /* byte mode */
+ if (blocks == 1 && blksz < 512)
+ cmd.arg |= blksz; /* byte mode */
+ else if (blocks == 1 && blksz == 512 &&
+ !(mmc_card_broken_byte_mode_512(card)))
+ cmd.arg |= 0; /* byte mode, 0==512 */
else
cmd.arg |= 0x08000000 | blocks; /* block mode */
cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC;
generated by cgit v1.2.3 (git 2.39.0) at 2025-02-03 01:09:21 +0300